782045660 has 48 divisors (see below), whose sum is σ = 1797586560. Its totient is φ = 283429440.

The previous prime is 782045659. The next prime is 782045689. The reversal of 782045660 is 66540287.

It is a happy number.

It is a super-2 number, since 2×782045660² = 1223190828649671200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61751 + ... + 73329.

It is an arithmetic number, because the mean of its divisors is an integer number (37449720).

Almost surely, 2^782045660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 782045660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898793280).

782045660 is an abundant number, since it is smaller than the sum of its proper divisors (1015540900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

782045660 is a wasteful number, since it uses less digits than its factorization.

782045660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11906 (or 11904 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 782045660 is about 27965.0792954356. The cubic root of 782045660 is about 921.3204338029.

The spelling of 782045660 in words is "seven hundred eighty-two million, forty-five thousand, six hundred sixty".